First, AEI is not a partisan think-tank. They're ideologically conservative, but they are non-partisan.
Secondly, it's hard to argue that advocating the Commerce Clause is an "ideological" or partisan viewpoint. A hundred years ago, it definitely would have been, but not in 2018. If anything, the current interpretation of the Commerce Clause is the antithesis of conservative ideology: it expands federal powers, limits the rights reserved by states, and (if you want to make things partisan) predominantly happened because a Democratic president nearly caused a Constitutional crisis when he tried to stack the courts in order to get court rulings in favor of his agenda.
I'm an advocate of net neutrality, but I'm not going to say that the position being advocated here by AEI is a particularly partisan one. If anything, they're smart, by framing a Republican-sponsored policy within the context of case law that Democrats have consistently supported for a century.